Sampling apparatus

Abstract

A sampling apparatus contains: a tubular member, a pressing mechanism, a forcing member, and a movable sampling member. The tubular member includes an inner thread section, an orifice, a stepped shoulder, a first fixing hole, and a second fixing hole. The pressing mechanism includes a press member, a driving member, a resilient element, and an elastic hook. The driving member includes an inserting segment, an aperture, a retaining slot, and a receiving groove, and two ends of the resilient element abut against the driving member and the forcing member. The cylindrical member includes an outer thread section and two opposite positioning recesses. The forcing member includes a needle and two opposite locating stems. The movable sampling member includes a hollowly lower side, a hollow affixing mount, a hollow tool, and a blade.

What is claimed is: 
     
       1. A sampling apparatus comprising: a tubular member, a pressing mechanism, a forcing member, and a movable sampling member; wherein
 the tubular member includes an inner thread section defined around a lower side of an inner wall of the tubular member to screw with a cylindrical member, the tubular member is hollow so as to accommodate the pressing mechanism, and the pressing mechanism includes a press member, a driving member, and a resilient element; the tubular member also includes an orifice defined on a central position of an upper of the tubular member to insert the press member, and the tubular member further includes a stepped shoulder formed around an upper side of the inner wall of the tubular member to prevent the pressing mechanism from removal; the driving member is inserted into a lower side of the press member, and the driving member includes an inserting segment formed on an upper side of the driving member and inserted into the lower side of the press member, an aperture defined on a central position of the inserting segment to insert the forcing member, a retaining slot defined below the driving member to retain with the movable sampling member, and a receiving groove formed in a lower side of the driving member to accommodate the resilient element; two ends of the resilient element abut against the driving member and the forcing member, such that the resilient element is pressed to generate an upward returning elasticity; the tubular member further includes a first fixing hole and a second fixing hole, and the press member includes an elastic hook fixed on an outer wall of the press member to alternatively hook with the first fixing hole and the second fixing hole, such that the movable sampling member extends out of or retracts into the cylindrical member; 
 the cylindrical member includes an outer thread section arranged around an upper side of an outer wall of the cylindrical member to screw with the inner thread section of the tubular member, and the cylindrical member also includes two opposite positioning recesses defined on a top end of the cylindrical member; 
 the forcing member includes a needle fixed on a bottom end of the forcing member and two opposite locating stems extending outwardly from an upper side of the forcing member to correspond to the two opposite positioning recesses of the cylindrical member, such that when the cylindrical member is locked in the tubular member, the two opposite locating stems are mounted in the two opposite positioning recesses of the cylindrical member so that the forcing member is fixed; 
 the movable sampling member includes a hollowly lower side, a hollow affixing mount, and a hollow tool, such that the needle of the forcing member retracts into the hollow tool, and the movable sampling member also includes a first blade arranged on a distal end of the tool to cut a sample and includes two opposite trenches defined on an upper side of the movable sampling member to correspond to the two opposite locating stems of the forcing member, such that when the movable sampling member extends outwardly or retracts inwardly, it shirks the two opposite locating stems, and when the movable sampling member retracts into the cylindrical member, the needle exposes outside the first blade to push the sample outwardly. 
 
     
     
       2. The sampling apparatus as claimed in  claim 1 , wherein the pressing mechanism further include a longitudinal hole arranged on the outer wall of the tubular member above the second fixing hole, and a pushing block is disposed outside the longitudinal hole, a fitting seat is arranged in the pushing block to correspond to the longitudinal hole; the press member also includes a coupling post extending outwardly from the outer wall of the press member above the elastic hook to fit into the fitting seat of the pushing block, such that when the pushing block is pressed, the elastic hook of the press member removes from the first fixing hole or the second fixing hole. 
     
     
       3. The sampling apparatus as claimed in  claim 1 , wherein the tool of the movable sampling member has an external screwing section arranged on a top end of the tool to screw with an internal screwing section of an affixing mount, a raised loop formed around a middle section of the raised loop, and a second blade for cutting the sample.